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Leven: add placeholder library for LED experiments
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‎libraries/LED_Matrix/examples/Blink/Blink.ino

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#include "FspTimer.h"
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#include "ArduinoGraphics.h"
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// the setup function runs once when you press reset or power the board
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void setup() {
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// initialize digital pin LED_BUILTIN as an output.
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pinMode(LED_BUILTIN, OUTPUT);
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Serial.begin(115200);
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Serial1.begin(115200);
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Serial2.begin(115200);
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}
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const int led_zero_index = 28;
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const int leds_howmany = 11;
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size_t pins[][2] = {
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{ 7, 3 }, // 0
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{ 3, 7 },
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{ 7, 4 },
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{ 4, 7 },
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{ 3, 4 },
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{ 4, 3 },
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{ 7, 8 },
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{ 8, 7 },
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{ 3, 8 },
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{ 8, 3 },
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{ 4, 8 }, // 10
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{ 8, 4 },
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{ 7, 0 },
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{ 0, 7 },
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{ 3, 0 },
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{ 0, 3 },
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{ 4, 0 },
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{ 0, 4 },
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{ 8, 0 },
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{ 0, 8 },
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{ 7, 6 }, // 20
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{ 6, 7 },
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{ 3, 6 },
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{ 6, 3 },
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{ 4, 6 },
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{ 6, 4 },
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{ 8, 6 },
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{ 6, 8 },
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{ 0, 6 },
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{ 6, 0 },
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{ 7, 5 }, // 30
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{ 5, 7 },
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{ 3, 5 },
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{ 5, 3 },
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{ 4, 5 },
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{ 5, 4 },
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{ 8, 5 },
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{ 5, 8 },
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{ 0, 5 },
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{ 5, 0 },
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{ 6, 5 }, // 40
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{ 5, 6 },
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{ 7, 1 },
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{ 1, 7 },
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{ 3, 1 },
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{ 1, 3 },
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{ 4, 1 },
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{ 1, 4 },
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{ 8, 1 },
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{ 1, 8 },
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{ 0, 1 }, // 50
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{ 1, 0 },
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{ 6, 1 },
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{ 1, 6 },
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{ 5, 1 },
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{ 1, 5 },
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{ 7, 2 },
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{ 2, 7 },
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{ 3, 2 },
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{ 2, 3 },
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{ 4, 2 },
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{ 2, 4 },
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{ 8, 2 },
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{ 2, 8 },
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{ 0, 2 },
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{ 2, 0 },
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{ 6, 2 },
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{ 2, 6 },
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{ 5, 2 },
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{ 2, 5 },
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{ 1, 2 },
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{ 2, 1 },
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{ 7, 10 },
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{ 10, 7 },
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{ 3, 10 },
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{ 10, 3 },
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{ 4, 10 },
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{ 10, 4 },
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{ 8, 10 },
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{ 10, 8 },
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{ 0, 10 },
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{ 10, 0 },
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{ 6, 10 },
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{ 10, 6 },
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{ 5, 10 },
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{ 10, 5 },
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{ 1, 10 },
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{ 10, 1 },
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{ 2, 10 },
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{ 10, 2 },
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{ 7, 9 },
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{ 9, 7 },
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{ 3, 9 },
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{ 9, 3 },
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{ 4, 9 },
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{ 9, 4 },
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};
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#include "charmatrix.h"
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void display_char(int letter) {
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for (int i = 0; i < 5; i++) {
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if (font[letter].d[i] & 1) {
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turnLed(3 + (12 * i), true);
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}
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if (font[letter].d[i] & 2) {
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turnLed(2 + (12 * i), true);
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}
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if (font[letter].d[i] & 4) {
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turnLed(1 + (12 * i), true);
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}
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if (font[letter].d[i] & 8) {
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turnLed(0 + (12 * i), true);
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}
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}
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}
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void turnLed(int idx, bool on) {
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size_t pin_anode = pins[idx][0] + led_zero_index;
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size_t pin_catode = pins[idx][1] + led_zero_index;
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for (int i = led_zero_index; i < led_zero_index + leds_howmany; i++) {
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//if (i != pin_anode && i != pin_catode) {
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pinMode(i, INPUT);
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//}
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}
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if (on) {
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pinMode(pin_anode, OUTPUT);
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pinMode(pin_catode, OUTPUT);
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digitalWrite(pin_anode, HIGH);
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digitalWrite(pin_catode, LOW);
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}
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}
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#include <ArduinoGraphics.h>
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const byte canvasWidth = 12;
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const byte canvasHeight = 8;
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class LEDsDrawClass : public ArduinoGraphics {
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public:
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// can be used with an object of any class that inherits from the Print class
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LEDsDrawClass(Print &printObject = (Print &)Serial) :
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ArduinoGraphics(canvasWidth, canvasHeight),
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_printObject(&printObject) {
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memset((uint8_t*)_canvasBuffer, 0, canvasWidth * canvasHeight) ;
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}
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// this function is called by the ArduinoGraphics library's functions
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virtual void set(int x, int y, uint8_t r, uint8_t g, uint8_t b) {
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// the r parameter is (mis)used to set the character to draw with
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_canvasBuffer[y][x] = r;
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// cast unused parameters to void to fix "unused parameter" warning
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(void)g;
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(void)b;
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}
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// display the drawing
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void endDraw() {
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ArduinoGraphics::endDraw();
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for (int i = 0; i < canvasWidth * canvasHeight; i++) {
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Serial.println(((uint8_t*)_canvasBuffer)[i]);
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}
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}
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uint8_t* getCanvas() {
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return (uint8_t*)_canvasBuffer;
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}
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private:
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Print *_printObject;
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char _canvasBuffer[canvasHeight][canvasWidth] = {{0}};
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};
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LEDsDrawClass LEDS;
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volatile int i_isr = 0;
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void __attribute__((naked)) turnOnLedISR(timer_callback_args_t *arg) {
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asm("push {LR}");
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turnLed(i_isr, (LEDS.getCanvas()[i_isr] > 0));
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i_isr = (i_isr + 1) % 96;
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asm("pop {r0}"); asm("bx r0");
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}
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int i = 0;
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// the loop function runs over and over again forever
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void loop() {
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digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
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delay(1000); // wait for a second
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digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
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delay(1000); // wait for a second
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Serial.println(i++);
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Serial2.println("AT");
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while (Serial2.available()) {
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Serial.write(Serial2.read());
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}
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Serial2.println("AT+WIFIBEGIN=BCMI,ArduinoccRulez");
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while (Serial2.available()) {
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Serial.write(Serial2.read());
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}
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int j = 0;
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#if 1
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while (1) {
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turnLed(j++ % 96, true);
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delay(33);
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if (j == 96) {
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break;
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}
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}
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FspTimer led_timer;
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uint8_t type;
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uint8_t ch = FspTimer::get_available_timer(type);
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led_timer.begin(TIMER_MODE_PERIODIC, type, ch, 10000.0, 50.0, turnOnLedISR);
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led_timer.setup_overflow_irq();
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led_timer.open();
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led_timer.start();
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draw_leds();
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while (1) {
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if (Serial.available()) {
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Serial.write(Serial.read());
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}
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}
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while (1) {
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for (int i = 0; i < 96; i++) {
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delayMicroseconds(100);
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turnLed(i, true);
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}
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}
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#endif
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while (1) {
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while (Serial1.available()) {
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Serial.write(Serial1.read());
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}
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if (millis() % 500 == 0) {
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delay(1);
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j++;
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}
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display_char(j % (sizeof(font) / sizeof(font[0])));
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}
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}

‎libraries/LED_Matrix/examples/Blink/charmatrix.h

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struct charmatrix { char c; int d[5]; };
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static const charmatrix font[] =
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{
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//"4x5 character map.
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//https://github.com/tompreston/4x5-Font
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//http://clubweb.interbaun.com/~rc/Papers/microfont.pdf
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' ', {0x0, 0x0, 0x0, 0x0, 0x0},
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'!', {0x4, 0x4, 0x4, 0x0, 0x4},
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'"', {0x1, 0x2, 0x0, 0x0, 0x0},
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'#', {0x6, 0xf, 0x6, 0xf, 0x6},
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'$', {0x7, 0xa, 0x6, 0x5, 0xe},
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'%', {0x7, 0xe, 0x4, 0x7, 0xe},
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'&', {0x2, 0x5, 0x6, 0xa, 0x5},
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'\'', {0x0, 0xa, 0x0, 0x0, 0x0},
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'(', {0x4, 0x8, 0x8, 0x8, 0x4},
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')', {0x4, 0x2, 0x2, 0x2, 0x4},
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'*', {0x0, 0x6, 0xf, 0x6, 0x0},
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'+', {0x0, 0x2, 0x7, 0x2, 0x0},
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',', {0x0, 0x0, 0x0, 0x2, 0x4},
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'-', {0x0, 0x0, 0x0, 0xf, 0x0},
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'.', {0x0, 0x0, 0x0, 0x0, 0x4},
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'/', {0x1, 0x1, 0x2, 0x4, 0x8},
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'0', {0x6, 0xb, 0xf, 0xd, 0x6},
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'1', {0x2, 0x6, 0x2, 0x2, 0x2},
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'2', {0xe, 0x1, 0x6, 0x8, 0xf},
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'3', {0xe, 0x1, 0x6, 0x1, 0xe},
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'4', {0x2, 0x6, 0xa, 0xf, 0x2},
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'5', {0xf, 0x8, 0xe, 0x1, 0xe},
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'6', {0x6, 0x8, 0xe, 0x9, 0x6},
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'7', {0xf, 0x1, 0x2, 0x4, 0x8},
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'8', {0x6, 0x9, 0x6, 0x9, 0x6},
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'9', {0x6, 0x9, 0xf, 0x1, 0x6},
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':', {0x0, 0x4, 0x0, 0x4, 0x0},
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';', {0x0, 0x4, 0x0, 0x4, 0x8},
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'<', {0x2, 0x4, 0x8, 0x4, 0x2},
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'=', {0x0, 0xf, 0x0, 0xf, 0x0},
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'>', {0x4, 0x2, 0x1, 0x2, 0x4},
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'?', {0x6, 0x9, 0x2, 0x0, 0x2},
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'@', {0x6, 0xd, 0xb, 0x8, 0x6},
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'A', {0x4, 0xa, 0xe, 0xa, 0xa},
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'B', {0xe, 0x9, 0xe, 0x9, 0xe},
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'C', {0x6, 0x9, 0x8, 0x9, 0x6},
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'D', {0xe, 0x9, 0x9, 0x9, 0xe},
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'E', {0xf, 0x8, 0xe, 0x8, 0xf},
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'F', {0xf, 0x8, 0xe, 0x8, 0x8},
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'G', {0x6, 0x8, 0xb, 0x9, 0x6},
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'H', {0x9, 0x9, 0xf, 0x9, 0x9},
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'I', {0xe, 0x4, 0x4, 0x4, 0xe},
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'J', {0x1, 0x1, 0x1, 0x9, 0x6},
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'K', {0x9, 0xa, 0xc, 0xa, 0x9},
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'L', {0x8, 0x8, 0x8, 0x8, 0xf},
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'M', {0x9, 0xf, 0xf, 0x9, 0x9},
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'N', {0x9, 0xd, 0xf, 0xb, 0x9},
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'O', {0x6, 0x9, 0x9, 0x9, 0x6},
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'P', {0xe, 0x9, 0xe, 0x8, 0x8},
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'Q', {0x6, 0x9, 0x9, 0xb, 0x7},
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'R', {0xe, 0x9, 0xe, 0xa, 0x9},
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'S', {0x7, 0x8, 0x6, 0x1, 0xe},
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'T', {0xe, 0x4, 0x4, 0x4, 0x4},
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'U', {0x9, 0x9, 0x9, 0x9, 0x6},
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'V', {0x9, 0x9, 0x9, 0x6, 0x6},
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'W', {0x9, 0x9, 0xf, 0xf, 0x9},
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'X', {0x9, 0x9, 0x6, 0x9, 0x9},
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'Y', {0x9, 0x5, 0x2, 0x2, 0x2},
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'Z', {0xf, 0x2, 0x4, 0x8, 0xf},
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'[', {0xe, 0x8, 0x8, 0x8, 0xe},
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'\\', {0x8, 0x8, 0x4, 0x2, 0x1},
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']', {0x7, 0x1, 0x1, 0x1, 0x7},
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'^', {0x4, 0xa, 0x0, 0x0, 0x0},
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'_', {0x0, 0x0, 0x0, 0x0, 0xf},
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'`', {0x4, 0x2, 0x0, 0x0, 0x0},
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'a', {0x0, 0x5, 0xb, 0xb, 0x5},
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'b', {0x8, 0x8, 0xe, 0x9, 0xe},
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'c', {0x0, 0x7, 0x8, 0x8, 0x7},
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'd', {0x1, 0x1, 0x7, 0x9, 0x7},
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'e', {0x0, 0x6, 0xf, 0x8, 0x7},
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'f', {0x3, 0x4, 0xe, 0x4, 0x4},
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'g', {0x7, 0x9, 0x7, 0x1, 0x7},
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'h', {0x8, 0x8, 0xe, 0x9, 0x9},
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'i', {0x0, 0x2, 0x0, 0x2, 0x2},
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'j', {0x1, 0x0, 0x1, 0x1, 0x6},
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'k', {0x8, 0xa, 0xc, 0xa, 0x9},
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'l', {0xc, 0x4, 0x4, 0x4, 0xe},
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'm', {0x0, 0x9, 0xf, 0xf, 0x9},
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'n', {0x0, 0xe, 0x9, 0x9, 0x9},
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'o', {0x0, 0x6, 0x9, 0x9, 0x6},
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'p', {0x0, 0xe, 0x9, 0xe, 0x8},
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'q', {0x0, 0x6, 0x9, 0x7, 0x1},
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'r', {0x0, 0xb, 0xc, 0x8, 0x8},
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's', {0x0, 0x7, 0x4, 0x2, 0xe},
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't', {0x4, 0xe, 0x4, 0x4, 0x3},
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'u', {0x0, 0x9, 0x9, 0x9, 0x6},
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'v', {0x0, 0x9, 0x9, 0x6, 0x6},
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'w', {0x0, 0x9, 0xf, 0xf, 0x6},
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'x', {0x0, 0x9, 0x6, 0x6, 0x9},
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'y', {0x0, 0x9, 0x7, 0x1, 0x6},
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'z', {0x0, 0xf, 0x2, 0x4, 0xf},
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'{', {0x6, 0x4, 0xc, 0x4, 0x6},
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'|', {0x4, 0x4, 0x0, 0x4, 0x4},
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'}', {0xc, 0x4, 0x6, 0x4, 0xc},
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'~', {0x0, 0x0, 0x5, 0xa, 0x0}
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};

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